The year at a glance
Averages from 30 years of climate history, 1991-2020
| Harlingen | Metric | Mercedes |
|---|---|---|
| 231 days | Sunny daysclear or partly cloudy skies | 234 days |
| 24 in | Precipitationper year | 22 in |
| 89 days | Wet daysrain or snow per year | 82 days |
| 0 in | Snowfallper year | 0 in |
| 154 days | Hot daysabove 90 °F | 160 days |
| 1 days | Freezing nightsat or below 32 °F | 1 days |
| 72% | Humidityaverage relative | 71% |
| 76 °F | Average temperatureyear round | 75 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Harlingen high | 72 | 76 | 81 | 86 | 91 | 95 | 97 | 98 | 93 | 88 | 80 | 73 |
| Mercedes high | 71 | 76 | 81 | 86 | 90 | 95 | 96 | 97 | 92 | 87 | 80 | 72 |
| Harlingen low | 51 | 55 | 60 | 66 | 72 | 76 | 77 | 76 | 73 | 67 | 58 | 52 |
| Mercedes low | 50 | 54 | 60 | 65 | 71 | 75 | 76 | 76 | 73 | 66 | 58 | 51 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Harlingen | 1.2 | 1.0 | 1.6 | 1.7 | 1.9 | 2.3 | 2.4 | 2.1 | 4.1 | 2.7 | 1.5 | 1.3 |
| Mercedes | 1.1 | 1.0 | 1.5 | 1.7 | 2.1 | 2.1 | 2.2 | 1.7 | 3.6 | 2.5 | 1.5 | 1.3 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Harlingen | 15 | 14 | 17 | 18 | 21 | 23 | 23 | 23 | 19 | 23 | 19 | 16 |
| Mercedes | 16 | 15 | 18 | 18 | 21 | 23 | 23 | 23 | 19 | 23 | 20 | 17 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Harlingen vs another city
- Harlingen vs Primera, TX
- Harlingen vs San Benito, TX
- Harlingen vs La Feria, TX
- Harlingen vs Los Fresnos, TX
- Harlingen vs Mila Doce, TX
- Harlingen vs New York, NY
- Harlingen vs Los Angeles, CA
- Harlingen vs Chicago, IL
- Harlingen vs Houston, TX
- Harlingen vs Phoenix, AZ
- Harlingen vs Philadelphia, PA
Mercedes vs another city
- Mercedes vs Weslaco, TX
- Mercedes vs La Feria, TX
- Mercedes vs Mila Doce, TX
- Mercedes vs Olivarez, TX
- Mercedes vs Donna, TX
- Mercedes vs Primera, TX
- Mercedes vs New York, NY
- Mercedes vs Los Angeles, CA
- Mercedes vs Chicago, IL
- Mercedes vs Houston, TX
- Mercedes vs Phoenix, AZ
- Mercedes vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).